Roller skate



E. E. HARDY. ROLLER sKATE.

APPLICATION FILED AUG.9, 1920.

Patented Feb. ,14,y 1922.

tirarse 'ST-Mgg earner yeerie-s.

nimmt' nasrraen nanny, or Bnooinrn, new YORK.

` nonnnnsiern.

Specication of Letters Eatentl j laigglltedy Feb, 14, .1922, Grignal application filed January 15, 1320, Serial No. 351,512?.

Divided aiidthis application filed' August .19, 1920. *Serial No. 402,368.

To all whom #may conoci :Be it lrnown that. l, Eimer EAsTMAN HARDY, acitizen'otI the UnitedStates, residing at Brooklyn, in the countyY of Kings and State'of New York, have invented certain new and useful improvements in Roller Skates,l of which the following is a specification.

My invention relates to iinprovementsv in roller ska-tes, :having Irelation tothe torni shown and described in certain patents already issued to me, to wit :Q-N os. 1,152,813;

1,228,111; 1,276,212, 'and 1,315,818; and ne@ in certain applications tiled by me, to wit Serial Nos. 351,579; ,351,580 and 402,307; and is divisional `oit' the application 351,579 mentioned and tiled January 15, 1920, and the object of the @particular improvement herein shown and described is to eiiect iinproved forms of Construction and arrangement pertaining to the details oi thehub structures and 'wheel mountings.

In the accompanying drawing l Figure lis a side elevation ot' niyj'iinproved roller skate. Y y

Figure 2 is a sectional view through the front wheel shaft, being on an enlarged scale.

.Figure 3 is a sectional view through the rear wheel shaft.

Figure 4: is a view generally similar to Fig. 3, showing the two rear shalt members tilted from the normal position ot alignment shown in Fig. 3.

Figi'ire 5 is a sectionalview through the pivotal connectionfor Vthe two rear shaft members shown inV Fig. 3, being on a still further enlargedscale.

Figure 6 is a -fragmentary sectional view corresponding to Fio'. 3, and 4 on a further enlarged scale, showing thehub portion of one of the rear wheels and connected parts removed 'from the shaft Figure isa side velevation, of the assembling sleeve for the wheel structure 'shown in Fig. 6 previous to having the ends turned up for holding.

My improved roller skate comprises a trame that is made of sheet metal and is and adjustablyconnected together; 4a shaft.

12 connected to the front frame member 10 having mounted on the middle portion a vfront wheel structure 13; .a shaftstructure that isy composed of two component members 1a in alignment connected to the rear frame -ineniber 11 that supports by its ends the rear wheels 15; a heel stop member 16 at the frontend of thelieel space on the rear frame member 11; and metal toe clamping members 17 operatively connected to the front frame member 10; and also, as regards the` straps, has a novel arrangement ifo-r the toe strapslS'aiid also for the heel straps 19.

The liront frame member 10 has a pair of ymembers 1e and has a pair of upstanding rear heel lugs 26 that are suitably slotted for receiving the heel strap 19.

vConsideration will now be given to the vwheel and axle construction.

The shait 12 is entered through the holes 21 in the side'armsv 20 and 1s et substantially stud form, comprising a cylindrical body portion at the middle with threaded end portions 2"? and a nut 28 is n'iounted on the saidthreaded portion 27 that engages with the outer face ot the side arms 20. lAlso, there may beacotter pin 29 on the end portion outside thesaid nutv 28.

Between the arms 20 and mounted on the shaft 12 there is a sleeve SOeXtending along the middle and major portion ot the length L thereof, there maybe a washer 31V opposed to the inner face of each of the arms 20, as shown, and intermediate the said washer 31 and the opposed end of the sleeve 30 is a washer 32 that serves as the outer cone bearing member for operatively housing the balls 33 of the ball bearing device at each end of the :wheel structure 13.

` The end portions ot the sleeve 30 serve as thegiixed cylindrical parts of the bearings for Vthe balls 33.

' prises a sheet metal structure having a gen- The parts are constructed and arranged so that the nuts .23 can be screwed on the shaft f The front wheel structure 13 is built up ot two mating and similar members 34 that y have their opposed edges 35 meeting along the medial line or plane, and have each on the outer face a cup 36 for cooperating with the balls 33.

The cup 36 is provided inv the form of a depression ina hub portion 37 and the vcup 36 is made suiiiciently deep to extend over the periphery of the cone washer 32 and is an operative iit tor the said periphery, suitably to serve as anlemergency bearing on the outer side ot the balls 33. Also, on the inner side ot the balls 33 the opening 38 in the hub portion 37 is an operative tit for the opposed portion of the sleeve 30.

The washer 31 is made to serve as a thrust bearing by being made suiliciently large, as

shown, to extend beyond the opposed outer tace ot the cone washer 32 so as to be adapted to engage with a part 39 of the opposed outer face ot the wheel member 34.

Thus, as described, each individual wheel member or element 34 is adapted to operate independently ot the other, orto cooperate with the other mating` member so thatthe two operate together, substantially as one wheel.

ln the case oit the rearV wheel structure, there is provided a rear` wheel 15 on each side and the wheels are each individually mounted in a special manner so as to provide a complete and self-contained structure that is ready to be mounted in a relatively simple manner on the outer end portion ot' the shaft member 14, such as shown, orof` some other suitable form, the said structure comprising a complete bearing device for the wheel 15 that serves to operatively house the said wheel and means forholding the parts together'. y

Referring to Fig. 6, the wheelv15 comerally inwardly `directed hub portion 40 that is extended in sleeve-lileform along the axis and has a bore 41 that fits over a sleeve 42. The outer end of the said bore 41 opens into lan inwardly directed recess 43 of generally cup form. 4The inner portion 44 of the said recess 43 is rounded` for cooperatingas a raceway with the balls 45 of a ball bearing` device and the outer portion 46 thereof is opposed to and tits overthe periphery of a cone washer 47 that lits against the end of the said sleeve 42.

The inner end portion 48 of the hub portion 40 is reduced for a short distance, terminating in a shoulder 49 so las to be Va fit for and adapted to receive a cup structure 50 that serves as a finish for the inner end of the hub portion 40 and also generally for the inner end portion of the wheel 15. Thus the said cup structure 50 serves essentially as a part of the wheel proper, and is rigidly connected to the main wheel element 15 so as to rotate therewith, and has an opening 51 that lits over the sleeve42.

The said opening 51 and the bore or opening 41 in the hub portion 40 are adapted to serve as an emergency bearing in cooperation with the sleeve 42, that serves as a bearing'sleeve, the said emergency bearing being on the inner side of the ball bearing involving the balls 45. A

*On the outer side of the' balls 45 the outer portion 46 of the cup 43 cooperates .with the opposed periphery of the cone washer 47 as a bearing.

The inner face of the cup structure 5() is substantially flush with the vadjacentinner end of the bearing sleeve 42.

Thecone washer 47 serves as the outer end oi.l the fixed bearing struct-ure and the inner end thereof is formed by a fixed or non-ro tatingl structure 52 that is in the formot a second andexterior cup structure that generally lits overthe inner andfrotating cupl structure 50 and abuts against the end ot the bearing sleeve42.

The fixed cup structure 52 comprises the body portion in the form of an annular wall that has a part'of the `inner face in abutment with the opposed inner end face of the bearing sleeve 42 and has a part opposed to the inner end face of the inner cup structure 50, and has the lperipheral `portion 53 in the form of a cylindrical extension that fits over and encloses the periphery of the inner cup structure 50, So that the two cup structures are adapted to cooperate as bearing devices.

The fixed bearing structure as described is composed of the bearing sleeve 42 at the Vmiddle, the outer cup structure 52 at the inner end thereof, andthe cone washer 47 at the outer end thereof, and these parts are iixedly connected yin the following manner: The cup 52, sleeve 42, and cone 47 have openings that are of the same diameter and such as to fit over a cylindrical sleeve 54 of relatively thin sheet material, the body portion of which sleeve is of suitable length to extend through these parte, so that the end portions thereof may be headed or hanged `outwardly in some proper manner for rigidly holding the parts together.

As shown in Fig. 7, the said end portions 55 are provided with a plurality` of slits 56 that extend inwardly from the ends so that each of the said end portions 55 is composed of a corresponding plurality of fingers 57 that arereadily bent outwardly to form a head structure that is ada ted to hold the parts together, as mention i The holding` sleeve'54 lits over the cylindrical part 58 of the shaft member 14. vThe extremeouter end portion 59 of the said shaft member 14 is, as shown, in the form ot a head. f

Theotwo shaft memberslst are similar, positioned generally in alignment,"and have the inner end portions 6() of semicircular form of cross-section, with the atted parts overlapping and pivotally connected together by means of a cotter-pin 61 that is positioned in holes that are provided in the over-lapping portions, the Cotter-pin 61 being generally directed horizontally. Thus the two shaft members 14 may have a limited relative swinging mowement, generally in a vertical plane.

The portions 62 of the shaft members 14 adjacent and outward from the over-lapping flatted portions may be of cylindrical form, and are reduced relatively to the outer cylindrical portion 58 that is housed in the holding sleeve 54. The square portion 25, already mentioned is positioned intermediate these two cylindrical portions, which part is positioned in the lhole 24 in the supporting arm 23 of the rear trame member 11, and is non-rotative therein, and is of such a t therein as to permit of the slight tilting movement or' the wheels 15 relatively one to the other.

In assembling the parts the unit composed of the wheel and bearing structure therefor, held together as a unit by the holding sleeve 54, is mounted o n the shaft memloer 14 and positioned on the outer cylindrical portion 58, with the holding sleeve 54 in abutment with the head 59, and then the reduced portion 62 is entered through the hole 24 and the square bearing on supporting part 25 brought into position in thesaid hole 24.

The detail of operatively connecting the over-lapping portions 60, involving the positioning of the cotter-pin 6l, involves a housing structure 63 that fills the space between the two side support-ing arms 23 and encloses or houses the over-lapping parts 60 and all of th'e adjacent parts oi the shaft members 14 that are positioned betweenthe said side arms 23, and the said housing structure G3 is positioned by means of the cotter-pin 61, which extends entirely therethrough.

The said housing structure, furthermore, serves as the means for limiting the relative tilting, swinging, or rocking movement of vthe shaft members 14 and for cushioning such movement, and does these in the tollowing manner: The said structure eomprises at the exterior a shell 64 in the form of a. tube of appreeiably greater diameter than that of the shaft members '14 housed therein and that is of suitable length to have the ends abut against the opposed faces of the frame supporting arms. 23 and .the entire `interiorspace between the inner wall of the shell or tube 64 and theshaft vmembers 14 is filled with a cushioning device `65 thatis composed ofy relatively sott f rubber.

that is provided with an inwardly directed cupped portion, a bearing sleeve for cooperating as a bearing device with the extreme inner and axial portion of the said hub portion and also with a set of balls at the inner portion oitl the said cupped portion, an annular -cone member for closing the said cupped portion, positioned in abutment with the outer end portion of the said sleeve, and having the periphery housed within the opposed border wall of the said cupped portion, and means for holding the said cone member in position at .the said outer end portion of the said sleeve.

2. In a roller skate, a wheel structure' having a cupped portion opening inwardly from one face, the end wallof the said cupped portion having an opening that is adapted to receive a bearing sleeve, the outer portion of the enclosing wall of the said cupped portion being adapted to cooperate with the peripheral portion of an annular cone member positioned at the outer end of the said sleeve, and theinner part of the said cupped portion being adapted to serve as a raceway for a set of bearing balls.

3. In a roller skate, a wheel structure as described in claim 2, and an inner cupped struct-ure serving as an extension and inish to the said structure on the side remote from the said cupped portion and also having an opening that is adapted to receive the said bearing sleeve.

4. In a roller skate as described in claim 3, an exterior cupped structure for operatively housing the said inner cupped structure and iitting against the inner end of the said bearing sleeve, and a holding sleeve having the body portion extended successively through the outer cupped structure, through the bearing sleeve, and through the cone member, and having the end portion flanged outwardly to serve as holding heads for holding the parts together.

I3. ln a roller Skate, a bearingshaft of usher-like structures, `and a holding tube tubular form, a Washer-1ike structure for entered through the openings' in the said limiting endwise movement of the Wheel shaft and Washer-like structures and having 10 positioned in abutment, one at each end flanged end portions in abutment with the of the said bearing shaft, a Wheel structure outer faces of the said Washer-like strucoperatvely mounted on the said bearing tures for holding the arts together.'

vshaft and positioned between the said EMERY EA TMAN `HARDY. 

